Free online M2TS to XVID converter

What the M2TS format is

M2TS is a transport-stream container used mainly for Blu-ray video, AVCHD camcorders, and HD recording systems. It commonly contains H.264/AVC or MPEG-2 video with AC-3, DTS, or uncompressed PCM audio, plus subtitles and multiple program streams. Blu-ray authoring software and disc backups often preserve the .m2ts extension inside a BDMV structure.

Some M2TS recordings are interlaced, especially footage from older cameras and broadcast sources. The container itself does not determine the video codec, resolution, frame rate, or audio format, so the conversion program must inspect those properties before encoding.

What the Xvid format is

Xvid is an MPEG-4 Part 2 video codec, not a container. Xvid video is commonly saved in an AVI file with an .avi extension and paired with MP3 audio. It was designed for efficient compression and is supported by many older televisions, DVD players, media boxes, and Windows applications.

Xvid is useful when a device specifically requires MPEG-4 ASP or an AVI file. It is less efficient than H.264 or newer codecs at comparable quality, so the conversion generally reduces compatibility problems rather than improving visual quality or file size.

How to actually convert M2TS to Xvid

Using FFmpeg

FFmpeg provides direct control over the Xvid encoder and audio format. Install a build that includes libxvid and libmp3lame, then inspect the source:

ffmpeg -i input.m2ts

For progressive footage, convert the first video and audio streams to Xvid and MP3 with:

ffmpeg -i input.m2ts -map 0:v:0 -map 0:a:0 -c:v libxvid -q:v 4 -vtag XVID -c:a libmp3lame -b:a 192k -ar 48000 output.avi

The -q:v 4 setting uses quality-based video encoding; values from roughly 2 to 6 are a practical range, with lower values producing larger files and better quality. Use -b:v 1500k instead of -q:v 4 if a fixed bitrate is required by the target device.

For interlaced footage, deinterlace while encoding:

ffmpeg -i input.m2ts -map 0:v:0 -map 0:a:0 -vf yadif -c:v libxvid -q:v 4 -vtag XVID -c:a libmp3lame -b:a 192k output.avi

Do not apply yadif to progressive footage, because unnecessary deinterlacing can soften the image. To keep a particular audio or subtitle stream, change the -map selections after reviewing FFmpeg's stream listing.

Using the 101convert online converter

You can convert the file for free on 101convert.com without installing software. Upload the M2TS file, choose Xvid or AVI with Xvid video when the output options are shown, start the conversion, and download the resulting file. Large Blu-ray recordings may take longer to upload and process, and the output settings may provide less control than FFmpeg.

Quality, compatibility, and limitations

Xvid is lossy: decoding the M2TS and encoding it again cannot preserve all original detail. Keep the original M2TS when it is an archival source, and test the AVI on the intended device before converting a large batch.

AVI/Xvid compatibility is highest with MPEG-4 Part 2 video, MP3 audio, standard pixel formats, and common resolutions. Some older players reject high-definition dimensions, variable frame rates, AC-3 or DTS audio, or unusual H.264-derived frame properties. If playback fails, use a fixed frame rate such as -r 25 or -r 30 only when it matches the source, and avoid changing frame rate unnecessarily.

Converting a Blu-ray M2TS file does not remove copy protection. FFmpeg may also fail on encrypted or incomplete disc content; use an authorized, decrypted source before encoding.